Inhibitory effect of erythromycin, tetracycline and sulfamethoxazole antibiotics on anaerobic treatment of a pharmaceutical wastewater

2015 ◽  
Vol 71 (11) ◽  
pp. 1620-1628 ◽  
Author(s):  
Sevcan Aydın ◽  
Bahar Ince ◽  
Orhan Ince
Keyword(s):  
Microbial Community ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Treatment ◽  
Inhibitory Effect ◽  
Organic Content ◽  
Pharmaceutical Wastewater ◽  
Research Support ◽  
Anaerobic Sequencing Batch Reactor ◽  
High Organic Content

Pharmaceuticals enter ecosystems, which causes changes to microbial community structure and development of resistant genes. Anaerobic treatments can be an alternative application for treatment of pharmaceutical wastewaters, which has high organic content. This study aims to develop an understanding of the effects of sulfamethoxazole–erythromycin–tetracycline (ETS), sulfamethoxazole–tetracycline (ST), erythromycin–sulfamethoxazole (ES) and erythromycin–tetracycline (ET) combinations on the anaerobic treatment of pharmaceutical industry wastewater. The results of this investigation revealed that bacteria have a competitive advantage over archaea under all antibiotic combinations. The ET reactor showed a better performance compared to other reactors; this could be due to antagonistic effects of sulfamethoxazole. Acute inhibition in the microbial community was also strongly affected by antibiotics concentrations. This indicated that the composition of the microbial community changed in association with anaerobic sequencing batch reactor performances. The results of this research support the idea that an acute test could be used to control and improve the anaerobic treatment system.

Post-treatment of a slaughterhouse wastewater: stability of the microbial community of a sequencing batch reactor operated under oxygen limited conditions

2006 ◽  
Vol 54 (2) ◽  
pp. 215-221 ◽  
Author(s):  
A. Cabezas ◽  
P. Draper ◽  
L. Muxí ◽  
C. Etchebehere
Keyword(s):  
Microbial Community ◽  
Organic Nitrogen ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Treatment ◽  
Post Treatment ◽  
Ammonia Oxidizing Bacteria ◽  
Slaughterhouse Wastewater ◽  
Nitrite Oxidizing Bacteria ◽  
The Stability

Slaughterhouse wastewater is a complex effluent with an important content of organic nitrogen. After an anaerobic treatment where most of the organic matter is removed, the nitrogen, remains as ammonium and post-treatment of the effluent is necessary. Sequencing batch reactor (SBR) technology has been developed to completely remove nitrogen in one single reactor combining aerobic and anoxic stages. Under oxygen limited conditions only nitrite is produced with concomitant energy saving. The stability and diversity of the microbial community from a nitrifying denitrifying SBR operated under oxygen limited conditions were studied using molecular and respirometric methods. The AOB (ammonia oxidizing bacteria) community was relatively stable Nitrosomonas being the dominant genera although Nitrosospira and Nitrosococcus were detected in low proportions. Nitrite oxidizing bacteria were out competed during the operation under oxygen-limited conditions. After an increase of the DO in the reactor Nitrobacter spp were detected suggesting that they remained in the system. Changes in the AOB and denitrifying communities were observed after the DO increase. Sedimentation problems were detected during operation, this could be related to the predominance of Thauera spp detected by FISH and T-RFLP.

Dynamics of a microbial community exposed to several concentrations of 2-chlorophenol in an anaerobic sequencing batch reactor

2015 ◽  
Vol 36 (14) ◽  
pp. 1776-1784 ◽  
Author(s):  
Lizeth Beristain-Montiel ◽  
Sergio Martínez-Hernández ◽  
Flor de María Cuervo-López ◽  
Florina Ramírez-Vives
Keyword(s):  
Microbial Community ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Anaerobic Sequencing Batch Reactor

Performance of anaerobic sequencing batch reactor in the treatment of pharmaceutical wastewater containing erythromycin and sulfamethoxazole mixture

2014 ◽  
Vol 70 (10) ◽  
pp. 1625-1632 ◽  
Author(s):  
S. Aydin ◽  
B. Ince ◽  
Z. Cetecioglu ◽  
E. G. Ozbayram ◽  
A. Shahi ◽  
...  
Keyword(s):  
Sequencing Batch Reactor ◽  
Biogas Production ◽  
Batch Reactor ◽  
Oxygen Demand ◽  
Control Unit ◽  
Anaerobic Treatment ◽  
Synthetic Wastewater ◽  
Fatty Acid Production ◽  
Anaerobic Sequencing Batch Reactor ◽  
Antibiotic Degradation

This study evaluates the joint effects of erythromycin–sulfamethoxazole (ES) combinations on anaerobic treatment efficiency and the potential for antibiotic degradation during anaerobic sequencing batch reactor operation. The experiments involved two identical anaerobic sequencing batch reactors. One reactor, as control unit, was fed with synthetic wastewater while the other reactor (ES) was fed with a synthetic substrate mixture including ES antibiotic combinations. The influence of ES antibiotic mixtures on chemical oxygen demand (COD) removal, volatile fatty acid production, antibiotic degradation, biogas production, and composition were investigated. The influent antibiotic concentration was gradually increased over 10 stages, until the metabolic collapse of the reactors, which occurred at 360 days for the ES reactor. The results suggest that substrate/COD utilization and biogas/methane generation affect performance of the anaerobic reactors at higher concentration. In addition, an average of 40% erythromycin and 37% sulfamethoxazole reduction was achieved in the ES reactor. These results indicated that these antibiotics were partly biodegradable in the anaerobic reactor system.

Effect of low pH and metal content on microbial community structure in an anaerobic sequencing batch reactor treating acid mine drainage

2019 ◽  
Vol 141 ◽  
pp. 105860 ◽  
Author(s):  
Alessandra Giordani ◽  
Renata Piacentini Rodriguez ◽  
Giselle Patrícia Sancinetti ◽  
Elize Ayumi Hayashi ◽  
Euzébio Beli ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Acid Mine Drainage ◽  
Microbial Community Structure ◽  
Metal Content ◽  
Sequencing Batch Reactor ◽  
Mine Drainage ◽  
Batch Reactor ◽  
Low Ph ◽  
Anaerobic Sequencing Batch Reactor
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